/* * Unicode routines for use inside the server * * Copyright (C) 1999 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include "wine/port.h" #include <ctype.h> #include <stdio.h> #include "unicode.h" /* number of following bytes in sequence based on first byte value (for bytes above 0x7f) */ static const char utf8_length[128] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x80-0x8f */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0x90-0x9f */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xa0-0xaf */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 0xb0-0xbf */ 0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xc0-0xcf */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xd0-0xdf */ 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* 0xe0-0xef */ 3,3,3,3,3,0,0,0,0,0,0,0,0,0,0,0 /* 0xf0-0xff */ }; /* first byte mask depending on UTF-8 sequence length */ static const unsigned char utf8_mask[4] = { 0x7f, 0x1f, 0x0f, 0x07 }; /* minimum Unicode value depending on UTF-8 sequence length */ static const unsigned int utf8_minval[4] = { 0x0, 0x80, 0x800, 0x10000 }; static inline char to_hex( char ch ) { if (isdigit(ch)) return ch - '0'; return tolower(ch) - 'a' + 10; } /* parse an escaped string back into Unicode */ /* return the number of chars read from the input, or -1 on output overflow */ int parse_strW( WCHAR *buffer, data_size_t *len, const char *src, char endchar ) { WCHAR *dest = buffer; WCHAR *end = buffer + *len / sizeof(WCHAR); const char *p = src; unsigned char ch; while (*p && *p != endchar && dest < end) { if (*p == '\\') { p++; if (!*p) break; switch(*p) { case 'a': *dest++ = '\a'; p++; continue; case 'b': *dest++ = '\b'; p++; continue; case 'e': *dest++ = '\e'; p++; continue; case 'f': *dest++ = '\f'; p++; continue; case 'n': *dest++ = '\n'; p++; continue; case 'r': *dest++ = '\r'; p++; continue; case 't': *dest++ = '\t'; p++; continue; case 'v': *dest++ = '\v'; p++; continue; case 'x': /* hex escape */ p++; if (!isxdigit(*p)) *dest = 'x'; else { *dest = to_hex(*p++); if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++); if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++); if (isxdigit(*p)) *dest = (*dest * 16) + to_hex(*p++); } dest++; continue; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': /* octal escape */ *dest = *p++ - '0'; if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0'); if (*p >= '0' && *p <= '7') *dest = (*dest * 8) + (*p++ - '0'); dest++; continue; } /* unrecognized escape: fall through to normal char handling */ } ch = *p++; if (ch < 0x80) *dest++ = ch; else /* parse utf8 char */ { int charlen = utf8_length[ch-0x80]; unsigned int res = ch & utf8_mask[charlen]; switch(charlen) { case 3: if ((ch = *p ^ 0x80) >= 0x40) break; res = (res << 6) | ch; p++; case 2: if ((ch = *p ^ 0x80) >= 0x40) break; res = (res << 6) | ch; p++; case 1: if ((ch = *p ^ 0x80) >= 0x40) break; res = (res << 6) | ch; p++; if (res < utf8_minval[charlen]) break; if (res > 0x10ffff) break; if (res <= 0xffff) *dest++ = res; else /* we need surrogates */ { res -= 0x10000; *dest++ = 0xd800 | (res >> 10); if (dest < end) *dest++ = 0xdc00 | (res & 0x3ff); } continue; } /* ignore invalid char */ } } if (dest >= end) return -1; /* overflow */ *dest++ = 0; if (!*p) return -1; /* delimiter not found */ *len = (dest - buffer) * sizeof(WCHAR); return p + 1 - src; } /* dump a Unicode string with proper escaping */ int dump_strW( const WCHAR *str, data_size_t len, FILE *f, const char escape[2] ) { static const char escapes[32] = ".......abtnvfr.............e...."; char buffer[256]; char *pos = buffer; int count = 0; for (; len; str++, len--) { if (pos > buffer + sizeof(buffer) - 8) { fwrite( buffer, pos - buffer, 1, f ); count += pos - buffer; pos = buffer; } if (*str > 127) /* hex escape */ { if (len > 1 && str[1] < 128 && isxdigit((char)str[1])) pos += sprintf( pos, "\\x%04x", *str ); else pos += sprintf( pos, "\\x%x", *str ); continue; } if (*str < 32) /* octal or C escape */ { if (!*str && len == 1) continue; /* do not output terminating NULL */ if (escapes[*str] != '.') pos += sprintf( pos, "\\%c", escapes[*str] ); else if (len > 1 && str[1] >= '0' && str[1] <= '7') pos += sprintf( pos, "\\%03o", *str ); else pos += sprintf( pos, "\\%o", *str ); continue; } if (*str == '\\' || *str == escape[0] || *str == escape[1]) *pos++ = '\\'; *pos++ = *str; } fwrite( buffer, pos - buffer, 1, f ); count += pos - buffer; return count; }